Launched by NASA on September 5, 1977, to study the outer solar system, the Voyager 1 is the furthest human-made object from Earth. As of January 10, 2019, the space probe is more than 13,491,481,615 miles (21,712,434,988 km) away from our home planet. It is also moving away at a speed of 38,026.77 mph (61,198.15 km/h) relative to the Sun. But, thanks to NASA’s Deep Space Network (DSN) Notes 1, we can still communicate with it (also with its sister, Voyager 2). But how far can Voyager 1 go before we lose communication?

The video published by the Primal Space channel below looks at how we communicate with Voyager and when it will eventually stop receiving our signals.

Hong Kong, New York, London, Tokyo, and Paris – all of these cities are quite unique yet same in so many regards. They represent technological, social and infrastructural hubs of what is commonly referred to as a modern human society. No matter what background, professional experience or connections you may or may not have, chances are that something new waits in each of these cities – and that is a problem.

A beautiful photo! SpaceX’s first Crew Dragon, which will carry astronauts to and from the International Space Station (ISS) is on the launchpad with the new astronaut walkway ahead of the first major test flight.

We only see one side of the moon, because it is tidally locked to the planet Earth (tidal locking the situation when an object’s orbital period matches its rotational period). What if the Earth was tidally locked to the Sun?

There are a total of 1092 UNESCO World Heritage Sites in the world (as of January 2019: 845 Cultural, 209 Natural and 38 Mixed). Here are the top 20 countries having the most number of UNESCO World Heritage sites.

What is a UNESCO World Heritage Site? According to the Wikipedia, “A World Heritage Site is a place (such as a building, city, complex, desert, forest, island, lake, monument, or mountain) that is listed by the United Nations Educational, Scientific and Cultural Organization (UNESCO) as being of special cultural or physical significance.“

A microgravity environment is a perfect place to demonstrate basic physics, i.e. Newton’s laws of motion. In the videos published by the NASA Johnson channel, astronauts aboard the International Space Station (ISS) just do that.

Today, on January 3, 2019, China’s lunar lander and rover Chang’e 4 achieved the first soft-landing on the far side of the Moon in the history of humanity’s space exploration. It’s a space feat no nation or space agency (including NASA) has accomplished until now.

Apollo 11 astronauts Neil Armstrong and Buzz Aldrin were the first people to walk on the moon. After more than ​21 1⁄2 hours on the lunar surface, in addition to the scientific instruments, they left behind an Apollo 1 mission patch and a memorial bag containing a gold replica of an olive branch as a traditional symbol of peace and a silicon message disk.